1. Ferreira, M. F. S. et al. Optical Fibers: Technology, Communications and Recent Advances Nova Science Publishers, Inc, London, 2017.
2. Oh, K. & Paek, U.-C. Silica Optical Fiber Technology for Devices and Components: Design, Fabrication, and International Standards, Wiley; 1 edition, Hoboken, USA (2012).
3. Mendez, A. & Morse, F. T. Specialty optical fibers handbook, Elsevier Science & Technol, USA (2006).
4. Xiao, L., Jin, W. & Demokan, M. S. Fusion splicing small-core photonic crystal fibers and single-mode fibers by repeated arc discharges. Opt. Lett. 32, 115–117 (2007).
5. Buczynski, R. et al. Optical fibers with gradient index nanostructured core. Opt. Express 23, 25588–25596 (2015).